ECO | MCQs

Explanation

An ecosystem consists of all the organisms and the physical environment with which they interact.

These biotic and abiotic components are linked together through nutrient cycles and energy flows.

Explanation

• The number of total estimated organisms species is 05-30 Million
• **
• According to Robert May, the number of total estimated organisms species is about 7 Million.
  

Explanation

Sea urchins feed mainly on algae, so they are primarily herbivores, but can feed on sea cucumbers and a wide range of invertebrates, such as mussels, polychaetes, sponges, brittle stars, and crinoids, making them omnivores, consumers at a range of trophic levels.

Explanation

Leopard seals use their powerful jaws and long teeth to kill smaller seals, fish, and squid.

These effective predators live in frigid Antarctic and sub-Antarctic waters, where they also eat penguins.

They often wait underwater near an ice shelf and snare the birds just as they enter the water after jumping off the ice.

Explanation

Extinct:

(of a species, family, or another group of animals or plants) having no living members; no longer in existence

ND17-1-2023

Explanation

A national budget typically consists of two main parts: income and expenditure.

Income refers to the total revenue collected by the government through:

• taxes
• fees
  

Explanation

زکوٰۃ کا مقصد  دولت کو چند ہاتھوں میں جمع ہوجانے سے روکنا ہے۔ 

زکوٰۃ  اسلام کا ایک اہم ارکان ہے جو دو ہجری کو فرض ہوا تھا۔

AGM 08-01-2023

Explanation

Explanation

GDP stands for "Gross Domestic Product"

Represents the total monetary value of all final goods and services produced

within a country during a period of time.

GDP is the most commonly used measure of economic activity.

Explanation

 Reduce the deficit on the balance of trade

The government may raise tariffs on imported goods or introduce quotas. Both  measures will lead to a reduction in imports and thus an improvement in the current account balance.